power: supply: axp20x_usb_power: Add missing check in axp20x_usb_power_probe

There are two regmap_update_bits() calls but only one of them has
return value check, which is odd. Add a return value check and
terminate the execution flow on failure just like the other call.
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/axp20x_usb_power.c

@@ -614,8 +614,10 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
 
 	if (power->axp20x_id == AXP813_ID) {
 		/* Enable USB Battery Charging specification detection */
-		regmap_update_bits(axp20x->regmap, AXP288_BC_GLOBAL,
+		ret = regmap_update_bits(axp20x->regmap, AXP288_BC_GLOBAL,
 				   AXP813_BC_EN, AXP813_BC_EN);
+		if (ret)
+			return ret;
 	}
 
 	psy_cfg.of_node = pdev->dev.of_node;